1.2 Flameblaster - is it possible to run RF whit it?

And does it worth it? what would i need to change to be able to run RF? phoenix is obv, but im not sure whit the rest. how much regen would i need, what do i need to change on the tree?

current tree
http://www.pathofexile.com/passive-skill-tree/AAAAAgUBAuMEBwSzBVsI9Ax9EFgQfxEtEmkUTRZvFxwYZRo4GmwfxyGwJKon7Sj6KU8qjSsNK3gsnC0fLYsulDT3NZI22DbpOlg64TwFPC09X0GHQktFnUbXSRtJskyzTeNSU1NSVcZdxmBtakNsFm0ZcXl8g4IegpuCx4M4g9uFxYcZh2WLjJBVlSCXhZeVl_Sa4J2un9-iAKZXpwinhKyYtQS3PriTvOrAVMHzxPbGnsauzfrYvdsL3fPfvuFz42rkIuvu7DjsVe0g73zwH_Fs8kX56PxL_gr-jw==